:root {
  --bg-color: #0d1117;
  --panel-bg: rgba(22, 27, 34, 0.8);
  --border-color: rgba(255, 255, 255, 0.08);
  --primary: #8b5cf6;
  --primary-hover: #7c3aed;
  --success: #10b981;
  --text-main: #f0f6fc;
  --text-sub: #8b949e;
  --accent-glow: 0 0 20px rgba(139, 92, 246, 0.35);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(139, 92, 246, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(59, 130, 246, 0.08) 0%, transparent 40%);
}

header {
  padding: 24px 32px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(12px);
  background: rgba(13, 17, 23, 0.85);
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-badge {
  background: linear-gradient(135deg, #8b5cf6, #ec4899);
  color: white;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 13px;
  letter-spacing: 0.5px;
}

.title {
  font-size: 20px;
  font-weight: 600;
  color: #fff;
}

.status-badge {
  font-size: 13px;
  padding: 4px 12px;
  border-radius: 20px;
  background: rgba(139, 92, 246, 0.15);
  color: #c084fc;
  border: 1px solid rgba(139, 92, 246, 0.3);
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #a855f7;
  box-shadow: 0 0 8px #a855f7;
}

main {
  flex: 1;
  padding: 32px;
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 24px;
}

@media (max-width: 960px) {
  main {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.panel-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-sub);
}

select, input[type="text"], textarea {
  background: rgba(13, 17, 23, 0.85);
  border: 1px solid var(--border-color);
  color: #fff;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: all 0.2s;
}

select:focus, input[type="text"]:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: var(--accent-glow);
}

textarea {
  min-height: 180px;
  resize: vertical;
  line-height: 1.6;
}

.range-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

input[type="range"] {
  flex: 1;
  accent-color: var(--primary);
}

.range-val {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  min-width: 40px;
}

.model-desc-box {
  background: rgba(139, 92, 246, 0.08);
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: 8px;
  padding: 12px;
  font-size: 12px;
  color: #d8b4fe;
  line-height: 1.5;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #ec4899);
  color: #fff;
  border: none;
  padding: 14px 24px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.35);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(139, 92, 246, 0.45);
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.player-card {
  background: rgba(13, 17, 23, 0.6);
  border-radius: 12px;
  padding: 20px;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.player-status {
  font-size: 13px;
  color: var(--text-sub);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 16px;
}

.metric-item {
  background: rgba(13, 17, 23, 0.5);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.metric-title {
  font-size: 12px;
  color: var(--text-sub);
}

.metric-value {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}

.metric-sub {
  font-size: 11px;
  color: #10b981;
}

.ttfb-badge {
  color: #38bdf8;
  font-weight: 700;
}